/usr/share/doc/ is in r-doc-html 2.14.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc-base/r-intro
/usr/share/doc-base/r-faq
/usr/share/doc-base/r-data
/usr/share/doc-base/r-language
/usr/share/doc-base/r-admin
/usr/share/doc-base/r-extensions
/usr/share/doc-base/r-ints
/usr/share/doc/r-doc-html/
/usr/share/doc/r-doc-html/manual/
/usr/share/doc/r-doc-html/copyright
/usr/share/doc/r-doc-html/changelog.Debian.gz
/usr/share/doc/r-doc-html/manual/R-lang.html
/usr/share/doc/r-doc-html/manual/R-admin.html
/usr/share/doc/r-doc-html/manual/R-exts.html
/usr/share/doc/r-doc-html/manual/R-ints.html
/usr/share/doc/r-doc-html/manual/R-FAQ.html
/usr/share/doc/r-doc-html/manual/R-data.html
/usr/share/doc/r-doc-html/manual/R-intro.html